Incandescent Reflectors are widely used throughout homes and commercial premisis. They are available in R39 (39mm diameter), R50 (50mm diameter), R64 (64mm diameter), R80 (80mm diameter), R95 (95mm diameter) and R125 (125mm diameter). Philips refer to these as Spotline and as they have a slightly squarer shape. There is also a range of colours to suit your seasonal, party or disco needs. You can upgrade these to halogen by directly replacing them with a Halogen PAR Spotlight or Halogen reflector.